note:You can easily replace a portion of text within a String using the String method "replace()". For example:String svar = "raspberry jam"; svar = svar.replace("jam", "pie"); System.out.println(svar);will print out:raspberry pieA photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names.Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Ex: If the input of the program is:ParkPhotos.txtand the contents of ParkPhotos.txt are:Acadia2003_photo.jpgAmerican Samoa1989_photo.jpgBlackCanyonoftheGunnison1983_photo.jpgCarlsbadCaverns 2010_photo.jpgCraterLake1996_photo.jpgGrand Canyon1996_photo.jpgIndiana Dunes 1987_photo.jpgLake Clark2009_photo.jpgRedwood1980_photo.jpgVirgin Islands 2007_photo.jpgVoyageurs2006_photo.jpgWrangellStElias1987_photo.jpgthe output of the program is:Acadia2003_info.txtAmerican Samoa1989_info.txtBlackCanyonoftheGunnison1983_info.txtCarlsbadCaverns2010_info.txtCraterLake1996_info.txtGrand Canyon1996_info.txtIndiana Dunes 1987_info.txtLake Clark2009_info.txtRedwood1980_info.txtVirgin Islands 2007_info.txtVoyageurs2006_info.txtWrangellStElias1987_info.txt 1 import java.util.Scanner;2 import java.io.FileInputStream;3 import java.io.IOException;45 public class LabProgram {6 public static void main(String[] args) throws IOException {Scanner scnr = new Scanner(System.in);789 System.out.print("Enter the name of the text file: ");10 String fileName = scnr.nextline();1112 FileInputStream fileStream = new FileInputStrem(fileName);13 Scanner fileScanner = new Scanner (fileStream);14 while (fileScanner.hasNextLine()){151617LabProgram.javaString photoFileName = fileScanner.nextLine();String infoFileName = photoFileName, replace(target:"_photo.jpg", replacement"_info.txt");1819 System.out.println(infoFileName);20 }21 fileStream.close();2223 }N N N24}25Lo

Algorithm:Define the input filename (e.g., "ParkPhotos.txt").Try opening and reading the input file…

Answered: note: You can easily replace a portion…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

note:

You can easily replace a portion of text within a String using the String method "replace()". For example:

String svar = "raspberry jam"; svar = svar.replace("jam", "pie"); System.out.println(svar);

will print out:

raspberry pie

A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names.

Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output.

Ex: If the input of the program is:
ParkPhotos.txt
and the contents of ParkPhotos.txt are:
Acadia2003_photo.jpg
American Samoa1989_photo.jpg
BlackCanyonoftheGunnison1983_photo.jpg
CarlsbadCaverns 2010_photo.jpg
CraterLake1996_photo.jpg
Grand Canyon1996_photo.jpg
Indiana Dunes 1987_photo.jpg
Lake Clark2009_photo.jpg
Redwood1980_photo.jpg
Virgin Islands 2007_photo.jpg
Voyageurs2006_photo.jpg
WrangellStElias1987_photo.jpg
the output of the program is:
Acadia2003_info.txt
American Samoa1989_info.txt
BlackCanyonoftheGunnison1983_info.txt
CarlsbadCaverns2010_info.txt
CraterLake1996_info.txt
Grand Canyon1996_info.txt
Indiana Dunes 1987_info.txt
Lake Clark2009_info.txt
Redwood1980_info.txt
Virgin Islands 2007_info.txt
Voyageurs2006_info.txt
WrangellStElias1987_info.txt

1 import java.util.Scanner;
2 import java.io.FileInputStream;
3 import java.io.IOException;
4
5 public class LabProgram {
6 public static void main(String[] args) throws IOException {
Scanner scnr = new Scanner(System.in);
7
8
9 System.out.print("Enter the name of the text file: ");
10 String fileName = scnr.nextline();
11
12 FileInputStream fileStream = new FileInputStrem(fileName);
13 Scanner fileScanner = new Scanner (fileStream);
14 while (fileScanner.hasNextLine()){
15
16
17
LabProgram.java
String photoFileName = fileScanner.nextLine();
String infoFileName = photoFileName, replace(target:"_photo.jpg", replacement"_info.txt");
18
19 System.out.println(infoFileName);
20 }
21 fileStream.close();
22
23 }
N N N
24}
25
Lo

Expert Solution

Step 1: Algorithm of the Code:

Algorithm:

Define the input filename (e.g., "ParkPhotos.txt").
Try opening and reading the input file using a BufferedReader to handle file input.
Each line in the input file is looped through:
- Read a line from the file.
- Replace "_photo.jpg" with "_info.txt" in the line.
- Print the modified filename.
In case an IOException materializes when reading a file, handle it.
The program is now complete.

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